Guests of all ages can explore the science of motion by building a mini-car, racing balls down a ramp, launching a catapult and more in this interactive learning lab. The limited-time exhibit will be in the Mylan Explore-atory through December 30. “Roll Drop Bounce” is sponsored by BB&T.

To celebrate the start of fall, the Clay Center is offering free admission to the “Harvest Skies” planetarium show with the purchase of gallery admission Wednesday, Sept. 26 – Sunday, Sept. 30. Hear stories about constellations in the fall skies and find out about the astronomical origins of Halloween in this original Clay Center production.

While at the Center, guests can vote in a battle for bragging rights as WVU and Marshall art faculty face off in the “Gallery Divided” exhibit featuring paintings, photographs, sculptures and even video. Then, get up close to some of the most majestic creatures on the planet or journey across the western frontier in an adventure that changed the course of American history in giant screen films “Bears” and “Lewis & Clark: Great Journey West.”

Museum hours are Wednesday through Saturday, 10 a.m. to 5 p.m. and Sunday, noon to 5 p.m. Gallery admission is free for members or $6 for children and $7.50 for adults. Films and planetarium shows are additional. For more information on this and other Clay Center exhibits, call 304-561-3570 or visit www.theclaycenter.org.